Archimago wrote: > Thanks for the info Arny. Wow. That's unfortunate. So that I'm clear > since I didn't have a look at those files, did they actually also go > through a resampling step with AD/DA conversion thrown in? >
I don't think that the resampling involved any A<>D conversion. The professional digital sample rate converters I'm familiar with are typified by this device: http://mytekdigital.com/storeeu/index.php/electronics/digital-cameras/stereo192src.html 18035 Notice that the devices inputs and outputs are AES/EBU - digital. User manual: 'Mytek Digital Stereo192 SRC Sample Rate Converter User Guide Link' (http://mytekdigital.com/download_library/operation_instructions_stereo192src-english.pdf) Typically they have two modes of operation - synchronous where the output sample rate is a precise fraction of the input sample rate (preferred) and asynchronous where the output sample rate is determined by a separate external clock. The second mode of operation is sometimes preferred because it may reduce jitter. Speaking as someone who has tried to organize this kind of test, avoiding distributing files that lead to false positives has been a problem. I've produced files with this same failing in a different context. One of the problems with this kind of test has been pointed out in papers describing tests done in the past, which is IM in the monitoring system. I've been working for about a year with this issue, and from that experience I have found that this problem is a lot more pervasive then some people would like to admit, especially when it is their monitoring system that may be at fault. It is very disappointing to work hard to hear audible differences only to find that they are not due to the issue that is the purpose of the experiment. > > I assume then that the test was abandoned and no final summary / data > came of it? I find nothing I recognize as a final summary that includes the critical issues that I am aware of. If anybody can find one, please help! +-------------------------------------------------------------------+ |Filename: stereo192src-front-back_grey.png | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=18035| +-------------------------------------------------------------------+ ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=103650 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
